A224536 - cp's OEIS frontend

A224536 Number of ways a digit can be appended or prepended to n and form a unique prime.

n	a(n)
0	4
1	8
2	2
3	8
4	3
5	2
6	2
7	8
8	2
9	6
10	4
11	5
12	1
13	6
14	1
15	2
16	2
17	4
18	1
19	8
20	0
21	4
22	3
23	5
24	1
25	2
26	2
27	6
28	2
29	4
30	1
31	7
32	0
33	5
34	2
35	2
36	1
37	5
38	2
39	6
40	2
41	5
42	1
43	6
44	2
45	1
46	3
47	5
48	1
49	5
50	2
51	3
52	2
53	4
54	2
55	1
56	2
57	8
58	1
59	5
60	2
61	6
62	0
63	6
64	3
65	2
66	1
67	6
68	1
69	4
70	2
71	4
72	1
73	6
74	1
75	2
76	2
77	6
78	1
79	4
80	1
81	4
82	4
83	6
84	0
85	3
86	1

[4, 8, 2, 8, 3, 2, 2, 8, 2, 6, 4, 5, 1, 6, 1, 2, 2, 4, 1, 8, 0, 4, 3, 5, 1, 2, 2, 6, 2, 4, 1, 7, 0, 5, 2, 2, 1, 5, 2, 6, 2, 5, 1, 6, 2, 1, 3, 5, 1, 5, 2, 3, 2, 4, 2, 1, 2, 8, 1, 5, 2, 6, 0, 6, 3, 2, 1, 6, 1, 4, 2, 4, 1, 6, 1, 2, 2, 6, 1, 4, 1, 4, 4, 6, 0, 3, 1]

cp's OEIS Frontend

A224536 Number of ways a digit can be appended or prepended to n and form a unique prime.

Table of values

List of values

n	a(n)
0	4
1	8
2	2
3	8
4	3
5	2
6	2
7	8
8	2
9	6
10	4
11	5
12	1
13	6
14	1
15	2
16	2
17	4
18	1
19	8
20	0
21	4
22	3
23	5
24	1
25	2
26	2
27	6
28	2
29	4
30	1
31	7
32	0
33	5
34	2
35	2
36	1
37	5
38	2
39	6
40	2
41	5
42	1
43	6
44	2
45	1
46	3
47	5
48	1
49	5
50	2
51	3
52	2
53	4
54	2
55	1
56	2
57	8
58	1
59	5
60	2
61	6
62	0
63	6
64	3
65	2
66	1
67	6
68	1
69	4
70	2
71	4
72	1
73	6
74	1
75	2
76	2
77	6
78	1
79	4
80	1
81	4
82	4
83	6
84	0
85	3
86	1

n	a(n)
0	4
1	8
2	2
3	8
4	3
5	2
6	2
7	8
8	2
9	6
10	4
11	5
12	1
13	6
14	1
15	2
16	2
17	4
18	1
19	8
20	0
21	4
22	3
23	5
24	1
25	2
26	2
27	6
28	2
29	4
30	1
31	7
32	0
33	5
34	2
35	2
36	1
37	5
38	2
39	6
40	2
41	5
42	1
43	6
44	2
45	1
46	3
47	5
48	1
49	5
50	2
51	3
52	2
53	4
54	2
55	1
56	2
57	8
58	1
59	5
60	2
61	6
62	0
63	6
64	3
65	2
66	1
67	6
68	1
69	4
70	2
71	4
72	1
73	6
74	1
75	2
76	2
77	6
78	1
79	4
80	1
81	4
82	4
83	6
84	0
85	3
86	1

n	a(n)
0	4
1	8
2	2
3	8
4	3
5	2
6	2
7	8
8	2
9	6
10	4
11	5
12	1
13	6
14	1
15	2
16	2
17	4
18	1
19	8
20	0
21	4
22	3
23	5
24	1
25	2
26	2
27	6
28	2
29	4
30	1
31	7
32	0
33	5
34	2
35	2
36	1
37	5
38	2
39	6
40	2
41	5
42	1
43	6
44	2
45	1
46	3
47	5
48	1
49	5
50	2
51	3
52	2
53	4
54	2
55	1
56	2
57	8
58	1
59	5
60	2
61	6
62	0
63	6
64	3
65	2
66	1
67	6
68	1
69	4
70	2
71	4
72	1
73	6
74	1
75	2
76	2
77	6
78	1
79	4
80	1
81	4
82	4
83	6
84	0
85	3
86	1